Casio M5610U with a metal mod I picked up for $99 and I love it! Pick up and go with never a care for durability or accuracy. World time across 5 presets, that you can swap back and forth with your home time at a press of buttons, solar powered, and radio receiving for auto updating of time and date.
What's your cheapest watch in your collection?
https://preview.redd.it/ruu9ajw448wb1.jpeg?width=3024&format=pjpg&auto=webp&s=efdea26fa712ca9806bb1bc24488286a7ad6e9dc
My 1989 (birth year) Fossil Batman watch. But I love it so much.